Why doesn’t the battery in my MacBook Pro charge?

Shannon Ahrendt April 10, 2012
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My MacBook Pro won’t charge. It is a Mid-2010 2.4 GHz Core i5 model with 4GB of RAM, 320GB HDD and running 10.7.2.

The mag-safe adapter lights up green when I connect it but intermittently goes on and off. The battery level light on the side of the computer flashes one light only.

Also, as bad luck would have it, I was taking system updates ( I had just bought this laptop used and it was due for major updates) when I noticed the battery was very low. I connected the power supply and that’s when I noticed the problem. I just barely had time to stop the updates before it died right in the middle of them. I’m hoping this did no further damage.

Obviously, it isn’t under warranty and I’ve already spent several hundred dollars purchasing it. I’m hoping this isnt going to cost a fortune to fix. Please, does anyone know what is wrong with and how to fix the newest addition to my Apple family?

  1. Windowsisbettr
    May 20, 2012 at 5:33 pm

    Choose your region and visit your local Apple Authorized Retailer or Store.

  2. James Bruce
    April 12, 2012 at 8:15 am

    Batteries die over time. Replacing it once every two years is usual. Unfortunately, batteries are quite expensive - $150-200? http://store.apple.com/uk/product/MA348G/A

  3. Carpenter__RichardCarpenter
    April 10, 2012 at 11:39 pm

    I wonder if it is SMC causing it. I would try to remove the battery (If you can) and reinstall the battery. After that start the mac up as normal and see if there are any changes.

    ****If that doesn't help any try this (If you can remove the Battery):

    1.Shut down the computer.

    2.Disconnect the MagSafe power adapter from the computer, if it's connected.

    3.Remove the battery.

    4.Press and hold the power button for 5 seconds.

    5.Release the power button.

    6.Reconnect the battery and MagSafe power adapter.

    7.Press the power button to turn on the computer.

    ****If you can't remove the battery:

    1.Shut down the computer.

    2.Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.

    3.On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.

    4.Release all the keys and the power button at the same time.

    5.Press the power button to turn on the computer.  

    Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.

    Source: Apple Support
    ( http://support.apple.com/kb/HT3964 )